Revert reversion of TensorFlow 2.9 update

With the errors caused by the previous TensorFlow 2.9 update
being fixed, we can proceed with the upgrade.

Signed-off-by: erik.andersson@arm.com <erik.andersson@arm.com>
Change-Id: Ie1f025e8d984efaebc68b8d051126d49bee6b2b8
diff --git a/ethosu/vela/tflite/BatchMatMulOptions.py b/ethosu/vela/tflite/BatchMatMulOptions.py
index a093ee5..c0f755b 100644
--- a/ethosu/vela/tflite/BatchMatMulOptions.py
+++ b/ethosu/vela/tflite/BatchMatMulOptions.py
@@ -3,27 +3,17 @@
 # namespace: tflite
 
 import flatbuffers
-from flatbuffers.compat import import_numpy
-np = import_numpy()
 
 class BatchMatMulOptions(object):
     __slots__ = ['_tab']
 
     @classmethod
-    def GetRootAs(cls, buf, offset=0):
+    def GetRootAsBatchMatMulOptions(cls, buf, offset):
         n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
         x = BatchMatMulOptions()
         x.Init(buf, n + offset)
         return x
 
-    @classmethod
-    def GetRootAsBatchMatMulOptions(cls, buf, offset=0):
-        """This method is deprecated. Please switch to GetRootAs."""
-        return cls.GetRootAs(buf, offset)
-    @classmethod
-    def BatchMatMulOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
-        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
-
     # BatchMatMulOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -49,23 +39,8 @@
             return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
         return False
 
-def Start(builder): builder.StartObject(3)
-def BatchMatMulOptionsStart(builder):
-    """This method is deprecated. Please switch to Start."""
-    return Start(builder)
-def AddAdjX(builder, adjX): builder.PrependBoolSlot(0, adjX, 0)
-def BatchMatMulOptionsAddAdjX(builder, adjX):
-    """This method is deprecated. Please switch to AddAdjX."""
-    return AddAdjX(builder, adjX)
-def AddAdjY(builder, adjY): builder.PrependBoolSlot(1, adjY, 0)
-def BatchMatMulOptionsAddAdjY(builder, adjY):
-    """This method is deprecated. Please switch to AddAdjY."""
-    return AddAdjY(builder, adjY)
-def AddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs): builder.PrependBoolSlot(2, asymmetricQuantizeInputs, 0)
-def BatchMatMulOptionsAddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs):
-    """This method is deprecated. Please switch to AddAsymmetricQuantizeInputs."""
-    return AddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs)
-def End(builder): return builder.EndObject()
-def BatchMatMulOptionsEnd(builder):
-    """This method is deprecated. Please switch to End."""
-    return End(builder)
\ No newline at end of file
+def BatchMatMulOptionsStart(builder): builder.StartObject(3)
+def BatchMatMulOptionsAddAdjX(builder, adjX): builder.PrependBoolSlot(0, adjX, 0)
+def BatchMatMulOptionsAddAdjY(builder, adjY): builder.PrependBoolSlot(1, adjY, 0)
+def BatchMatMulOptionsAddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs): builder.PrependBoolSlot(2, asymmetricQuantizeInputs, 0)
+def BatchMatMulOptionsEnd(builder): return builder.EndObject()